#include <fstream>

using namespace std;
ifstream fin("chatnoir.in");
ofstream fout("chatnoir.out");

int main()
{
    int t,n,m,x,y,i;
    fin>>t;
    for(i=0; i<n; i++)
    {
        fin>>n>>m>>x>>y;
        if(n-x <=4 || x-1<=4 || m-y<=4 || y-1<=4)
            fout << "DA"<<'\n';
        else
            fout << "NU"<<'\n';
    }
    return 0;
}